generatedSchema.usda

#usda 1.0
(
    "WARNING: THIS FILE IS GENERATED BY usdGenSchema.  DO NOT EDIT."
)

class Triangle "Triangle" (
    doc = """An equilateral triangle, whose vertices are equidistant to the 
    origin and lie on the XY plane in object-space."""
)
{
    uniform bool doubleSided = 0 (
        doc = """Although some renderers treat all parametric or polygonal
        surfaces as if they were effectively laminae with outward-facing
        normals on both sides, some renderers derive significant optimizations
        by considering these surfaces to have only a single outward side,
        typically determined by control-point winding order and/or 
        orientation.  By doing so they can perform \"backface culling\" to
        avoid drawing the many polygons of most closed surfaces that face away
        from the viewer.
        
        However, it is often advantageous to model thin objects such as paper
        and cloth as single, open surfaces that must be viewable from both
        sides, always.  Setting a gprim's doubleSided attribute to 
        \\c true instructs all renderers to disable optimizations such as
        backface culling for the gprim, and attempt (not all renderers are able
        to do so, but the USD reference GL renderer always will) to provide
        forward-facing normals on each side of the surface for lighting
        calculations."""
    )
    float3[] extent = [(-0.5, -0.28867513, 0), (0.5, 0.57735026, 0)] (
        doc = "Fallback extent value of a triangle with side length of 1.0."
    )
    uniform token orientation = "rightHanded" (
        allowedTokens = ["rightHanded", "leftHanded"]
        doc = """Orientation specifies whether the gprim's surface normal 
        should be computed using the right hand rule, or the left hand rule.
        Please see for a deeper explanation and
        generalization of orientation to composed scenes with transformation
        hierarchies."""
    )
    color3f[] primvars:displayColor (
        doc = '''It is useful to have an "official" colorSet that can be used
        as a display or modeling color, even in the absence of any specified
        shader for a gprim.  DisplayColor serves this role; because it is a
        UsdGeomPrimvar, it can also be used as a gprim override for any shader
        that consumes a displayColor parameter.'''
    )
    float[] primvars:displayOpacity (
        doc = """Companion to displayColor that specifies opacity, broken
        out as an independent attribute rather than an rgba color, both so that
        each can be independently overridden, and because shaders rarely consume
        rgba parameters."""
    )
    rel proxyPrim (
        doc = '''The proxyPrim relationship allows us to link a
        prim whose purpose is "render" to its (single target)
        purpose="proxy" prim.  This is entirely optional, but can be
        useful in several scenarios:
        
        - In a pipeline that does pruning (for complexity management)
        by deactivating prims composed from asset references, when we
        deactivate a purpose="render" prim, we will be able to discover
        and additionally deactivate its associated purpose="proxy" prim,
        so that preview renders reflect the pruning accurately.
        
        - DCC importers may be able to make more aggressive optimizations
        for interactive processing and display if they can discover the proxy
        for a given render prim.
        
        - With a little more work, a Hydra-based application will be able
        to map a picked proxy prim back to its render geometry for selection.

        \\note It is only valid to author the proxyPrim relationship on
        prims whose purpose is "render".'''
    )
    uniform token purpose = "default" (
        allowedTokens = ["default", "render", "proxy", "guide"]
        doc = """Purpose is a classification of geometry into categories that 
        can each be independently included or excluded from traversals of prims 
        on a stage, such as rendering or bounding-box computation traversals.

        See for more detail about how 
        purpose is computed and used."""
    )
    double sideLength = 1 (
        doc = "The length of each side of the equilateral triangle."
    )
    token visibility = "inherited" (
        allowedTokens = ["inherited", "invisible"]
        doc = '''Visibility is meant to be the simplest form of "pruning" 
        visibility that is supported by most DCC apps.  Visibility is 
        animatable, allowing a sub-tree of geometry to be present for some 
        segment of a shot, and absent from others; unlike the action of 
        deactivating geometry prims, invisible geometry is still 
        available for inspection, for positioning, for defining volumes, etc.'''
    )
    uniform token[] xformOpOrder (
        doc = """Encodes the sequence of transformation operations in the
        order in which they should be pushed onto a transform stack while
        visiting a UsdStage's prims in a graph traversal that will effect
        the desired positioning for this prim and its descendant prims.
        
        You should rarely, if ever, need to manipulate this attribute directly.
        It is managed by the AddXformOp(), SetResetXformStack(), and
        SetXformOpOrder(), and consulted by GetOrderedXformOps() and
        GetLocalTransformation()."""
    )
}